Epidemiology of binge eating disorder: prevalence, course, comorbidity, and risk factors.

PURPOSE OF REVIEW: Binge eating disorder (BED) is a new diagnosis in the Fifth Edition of the Diagnostic and Statistic Manual of Mental Disorders (DSM-5) and the Eleventh Revision of the International Classification of Diseases (ICD-11).

RECENT FINDINGS: DSM-5 BED is currently estimated to affect 1.5% of women and 0.3% of men worldwide; a lifetime diagnosis of DSM-5 BED is reported by 0.6-1.8% of women and 0.3-0.7% of men. In adolescence, BED is even more prevalent, but often transient. Many adults with BED report longstanding symptoms; less than half are recognized in healthcare. Commonly co-occurring conditions include obesity, type 2 diabetes, and hypertension. In a nationally representative US-based study, up to 23% of individuals with BED had attempted suicide, and virtually all (94%) reported lifetime mental health symptoms: 70% mood disorders, 68% substance use disorders, 59% anxiety disorders, 49% borderline personality disorder, and 32% posttraumatic stress disorder. Data on mortality are scarce, but the standardized mortality ratio of BED is estimated to be 1.5-1.8. Various minority statuses, deprivation, violence, trauma, and major mental illness may increase the risk of BED.

SUMMARY: BED is often invisible and overlooked, perhaps due to societal biases. For this reason, prevention, detection, and management of BED are closely linked with social justice and equity.